Hi,
If anyone would like to make their own low cost home brew Z80 CP/M computer
please contact me by email.
I have manufactured PCBs available for sale for $20 each plus shipping.
Preprogrammed EPROMs are also available for sale.
The hardware and software are documented including schematics, source code,
binary images, PCB layout, parts list, etc.
Details of the single board computer are available at:
http://groups.google.com/group/n8vem
Thanks!
Andrew Lynch
> Is anyone else questioning if this 'original' might instead be one of Steve Gabaly's
> (aka 'obtronix') replicas?
That appears to be the case. The Rockwell 40 pin chip is wrong as well.
Unfortuantely, "counterfeits" doesn't appear to be in any of the categories
eBay lets you report.
----- Original Message ----
>
> Apple I on eBay with Bid Now of $19,9999 or starting bid of $9,9999. It's
> 220246191431
Is anyone else questioning if this 'original' might instead be one of Steve Gabaly's
(aka 'obtronix') replicas?
Note the lack of the copyright message under the close-up of the 'Apple Computer 1'
logo (I believe the original has 'Palo Alto, Ca. Copyright 1976'). Also note that the
edge connector appears to have tin plated pads (like Steve's replica) vs. gold plated
pads (like the original). Coincidentally, there appears to be an air-brushed (or rubbed
out) spot on the back of the board ...precisely in the spot where Steve included the
'Homebrew 2005' message to help differentiate his replica from the original. Last,
the ROM labels on the cassette board are identical to those provided with Steve's
cassette board kit (and I thought that the original cassette board had a copyright
message on the upper right corner as well).
Can't speak for the referenced owner manuals, certificates, etc... (conveniently not
pictured ...I would think that the $20k asking price would warrant a couple of extra
pix of those items).
Scott
A list member emailed me saying there appeared to be a problem with the list. When I looked at the server
I saw the usual problem, fixed it, and neglected to check further (this is a reoccuring problem that I have
to "fix" every month or so). I assumed as usual this would fix the problem and was in a hurry to get out the
door.
Turns out, this time there was also something else amiss, so I went through a day or two of "it's already fixed"
emails, only to find out it wasn't.
My apologies, all should be well now.
Jay West
"This computer will only be sold to a MUSEUM OR SERIOUS COLLECTOR ONLY"
eBay is absolutely the WRONG venue to try proving that.
The whole notion of someone going to an estate sale and picking this
up is unfortunate as well. I though Sellam knew where all of them were?
Hi folks,
I recently added a LAB-8/e (PDP-8/e) to my collection.
Most of the machine is just running fine (except that I still urgently
need at least 8K of core!!). One of the two racks contains the FPP-12
floating point processor.
So I can write programs in FORTRAN IV, compile them and run them on the
FPP. An awsome device - with it, the 8/e becomes a real dual core
machine as the FPP-12 fetches its own instructions from core by data
breaks (getting at most half of the 8's memory bandwidth).
Now I want to run my Mandelbrot set program written for the H316 on the
8/e with FPP as well. The FORTRAN IV code was quite compatible (had to
adjust some of the FORMAT statements and IO channel numbers).
But now I want to write a "putchar" routine needed by the program. On
the H316 that was simple: One CPU, perfectly documented calling
conventions etc.
On the 8/e the FORTRAN IV compiler produces output for the RALF
assembler. RALF is capable of producing machine code for PDP-8 *and* the
FPP as well.
The main part of FORTRAN IV programs (nearly everything except IO) runs
on the FPP. Subroutine calling and argument passing are also done on the
FPP.
I now want to know if there are people out there who are able to help me
to program a simple PDP-8 assembler subroutine that can be called from
within a FORTRAN IV program. Sounds easy - but isn't.
I have written a template function and then compiled to RALF assembly -
I don't understand very much :-(
If anyone has experience with the FPP, RALF and "trapping" (they really
call it that way) to PDP-8 code, **please** get in touch with me!
Many thanks and best wishes,
Philipp :-)
P.S.: In FORTRAN IV the desired subroutine would have a signature like
"SUBROUTINE PCHAR(I)"
They are not mine, do not contact me, contact:
PyramidMotorLine at aol.com
if interested.
Actually, it's an IBM 5110-3 with the 5103 printer - no 5114 floppy drive.
Also, IBM 5363 newer model of the System/36.
Some pics here:
http://www.geocities.com/tosteve/5120.jpghttp://www.geocities.com/tosteve/5363.jpg
They are not mine, do not contact me, contact:
PyramidMotorLine at aol.com
if interested.
>
>Subject: Basic interpreter 8080 source code needed
> From: Jeff Erwin <jerwin at PureNetworks.com>
> Date: Thu, 12 Jun 2008 09:30:08 -0700
> To: <cctech at classiccmp.org>
>
>
>I have my Imsai 8080 fully running and communicating with my Mac Pro as a
>dumb terminal. Many thanks to this group for helpful pushing along the way..
>I have also modified SCS1, the Imsai monitor program, to my liking and have
>it burned into PROM. Since I do not yet have a floppy system for this
>antique, I wrote an Intel hex format loader and just send the hex files over
>the serial line to load them.
>
>Life is good.
>
>What I am looking for now is the 8080 asm source code to a good 8K basic
>interpreter. I found one called TinyBasic but it was so concerned with
>space the author built in a ton of self-modifying code and trying to follow
>the logic is like untying a plate of spaghetti. I have another one called
>BASIC85 which is better but assumes a VIO memory-addressable video system.
>If necessary I will take this one apart and make it work. I hear a lot
>about Imsai having an 8K basic, and I can find the manuals, but I can?t seem
>to locate the actual 8080 source.
>
>Anyone out there know of or have the asm source code to a basic interpreter
>or know what became of the Imsai Basic8K?
There are a pot load of BASICs on the net in source form.
One can be found on the Dave's old Computers [Dave Dunfield]. Others are
around try looking for LLL Basic. Tinybasic is a good one really despite
appearances as it was from my memory romable [There were several different ones].
Get back with what you find. I do have LLL and a version of PT 5K basics in my
archive and I got them off the net.
Allison
>
>Jeff Erwin
My Oops, that should have been Wright Line Model 2600, not "Write Line...".
Sigh, it's a Friday...
Lyle
---------- Forwarded Message ----------
Subject: Manual "IBM Card" Punch on eBay...
Date: Friday 13 June 2008 14:03
From: Lyle Bickley <lbickley at bickleywest.com>
To: "General Discussion: On-Topic Posts Only" <cctech at classiccmp.org>, Bay
Area Collector List <baccl at lists.baccl.net>
There is a Write Line Model 2600 IBM Card Punch on eBay (#370060251979). I
know the seller (Weirdstuff Warehouse) - and took a look at it.
It is in good shape - the escapement works fine and the keys don't stick. One
of the folks at Weirdstuff punched blank IBM cards I gave him (which is what
you see in the eBay pictures). I would bid on this item myself - but I've
managed to "avoid" card reader and punch I/O ;-)
This is not my item (i.e., consignment) - nor do I have any business interest
in this auction.
Regards,
Lyle
--
Lyle Bickley
Bickley Consulting West Inc.
Mountain View, CA
http://bickleywest.com
"Black holes are where God is dividing by zero"
-------------------------------------------------------
--
Lyle Bickley
Bickley Consulting West Inc.
Mountain View, CA
http://bickleywest.com
"Black holes are where God is dividing by zero"
